GB1002983A - Apparatus for two-way speech communication - Google Patents

Apparatus for two-way speech communication

Info

Publication number
GB1002983A
GB1002983A GB3992161A GB3992161A GB1002983A GB 1002983 A GB1002983 A GB 1002983A GB 3992161 A GB3992161 A GB 3992161A GB 3992161 A GB3992161 A GB 3992161A GB 1002983 A GB1002983 A GB 1002983A
Authority
GB
United Kingdom
Prior art keywords
loud
speaker
microphone
lever
nov
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3992161A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB1002983A publication Critical patent/GB1002983A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C11/00—Receptacles for purposes not provided for in groups A45C1/00-A45C9/00
    • A45C11/16—Jewel boxes

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
GB3992161A 1965-10-02 1961-11-08 Apparatus for two-way speech communication Expired GB1002983A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1965P0026029 DE1206967B (de) 1965-10-02 1965-10-02 Einrichtung zum Gegensprechen

Publications (1)

Publication Number Publication Date
GB1002983A true GB1002983A (en) 1965-09-02

Family

ID=7370310

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3992161A Expired GB1002983A (en) 1965-10-02 1961-11-08 Apparatus for two-way speech communication

Country Status (4)

Country Link
AT (1) AT263269B (de)
CH (2) CH400245A (de)
DE (1) DE1206967B (de)
GB (1) GB1002983A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4237339A (en) * 1977-11-03 1980-12-02 The Post Office Audio teleconferencing

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1050154A (en) * 1977-01-14 1979-03-06 Conrad D. Lafrance Telephone conferencing apparatus
DE4439146A1 (de) * 1994-11-03 1996-05-09 Deutsche Telekom Ag Freisprechanordnung mit einem Lautsprecher und einem Mikrofon

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE828714C (de) * 1948-10-02 1952-01-21 Siemens & Halske A G Fernsprechstation
DE1687621U (de) * 1952-08-04 1954-11-18 Siedle & Soehne G M B H Furtwa Einrichtung fuer ein koaxial mit einem lautsprecher angeordnetes mikrofon.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4237339A (en) * 1977-11-03 1980-12-02 The Post Office Audio teleconferencing

Also Published As

Publication number Publication date
AT263269B (de) 1968-07-10
DE1206967B (de) 1965-12-16
CH400245A (de) 1965-10-15
CH445738A (de) 1967-10-31

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